# Lake Trasimeno water level crisis

> Live situation record from CLSTR: https://clstr.news/situations/lake-trasimeno-water-level-crisis
> Updated: 2026-09-23T07:35:54.000Z. Sources: 4. Developments: 2.

Lake Trasimeno is experiencing critically low water levels, leading to significant operational and safety concerns. In late August, the hydrometric level dropped below -194 centimeters, forcing the suspension of navigation between Castiglione del Lago and Isola Maggiore. To assist residents and tourists, the Umbria Region implemented contingency measures, including maintaining high-season schedules on alternative routes and providing free shuttle bus services.

As water levels continued to recede, the low water exposed historical hazards. An unexploded World War II bomb was discovered on a beach near Lido Arezzo, close to Castiglione del Lago. Law enforcement cordoned off the area to await Army bomb disposal experts for a controlled detonation. The discovery of this ordnance, along with other munitions and bullets, highlights the ongoing impact of the receding waters on the lake's coastline.

## Timeline

### 2026-09-23: Lake Trasimeno unexploded WWII bomb resurfaces

A World War II unexploded bomb has resurfaced in Lake Trasimeno due to receding water levels. Authorities have secured the area near Castiglione del Lago awaiting Army bomb disposal experts.

2 sources. https://clstr.news/cluster/lake-trasimeno-unexploded-wwii-bomb-resurfaces

### 2026-08-27: Lake Trasimeno navigation suspended due to low water levels

Low water levels at Lake Trasimeno have halted navigation between Castiglione del Lago and Isola Maggiore. The Umbria Region is providing free shuttle buses and alternative boat routes to maintain connectivity.

4 sources. https://clstr.news/cluster/lake-trasimeno-navigation-suspended-due-to-low-water-levels

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Cite as: Lake Trasimeno water level crisis. CLSTR, https://clstr.news/situations/lake-trasimeno-water-level-crisis